When the world was created, everything spoke one language. Snails could speak to stone, trees to the wind, and so on. But as time passed, creatures developed their own languages and gradually forgot how to speak between species. However, a few rare people were born with the ability to learn a language of nature. Most of these people were apparently born Yasid, but even there nature-speakers became feared, mistrusted, and even attacked, sometimes to death. Many nature-speakers escaped the hostility of their countrymen and banded together, living peacefully in communes and becoming primarily known as tata-rook, or fire-worshipers, able to speak both the languages of fire and water.

In Enna Burning, Isi and Enna travel to Yasid to find a cure for Enna as she struggles to control her fire-speaking. Finn follows them there and they all arrive at Quapah.

Quapah-The only town in Yasid with a known name. On the outskirts of the town is a small community of tata-rook who use their nature-speaking gifts to yield good crops from the desert land. People from Quapah-proper who don't understand the fire-worshipers' abilities fear them and even attack them, sometimes even killing them.

The community of tata-rook in Quapah have a special ritual intended to remove the ability of fire-speaking in someone who can no longer control it. The ritual involves placing hot coals on the person's tongue and in their hands in order to "burn the first word of fire from [one's] tongue and burn away the acts of fire [one has] performed". It's a risky procedure and has so very rarely been attempted it is unknown how effective it is.